I'm sorry, but your judgment is unfair, snide and well off. You are obviously stereotyping a rim tribe to be those full of all the players who got "kicked out" of the core. I played rim on W42, in a rim tribe, lead by some players with amazing talent. By far, some of the best players I've seen play .net. Sure, maybe rim players overall aren't that great, but to classify every rim player as bad, and every rim tribe as being lead by illiterate 14 year olds is just plain silly.
In fact, a lot of the older players prefer to go rim as they don't have the time to spend in the core, and would prefer to grow around it until the late-game stage where they can beat the core players with sheer size. Wait, you didn't know, the rim gives more room for expansion.